Spine
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The influence of initial horizontal weight placement on the loads at the lumbar spine while lifting.
This was a biomechanical study of the effect of the initial horizontal distance between a person lifting and the load. Experimental data were analyzed using a dynamic rigid link model. ⋯ As the horizontal distance at the start of a lift increased, the peak moment acting on the lumbar spine also increased, but the increase was nonlinear. This is explained by a change in the technique of lifting when the distance is 40 cm or greater.
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This report gives the results of a population-based cross-sectional mailed questionnaire, with prospective follow-up of survey responders and nonresponders. ⋯ After considering potential differences in nonresponders, the estimated 1-month prevalence of low back pain was between 35% and 37%. Prevalence figures in survey responders may overestimate the true population prevalence by a modest amount.
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This is a report of a patient with acute spinal epidural hematoma taking aspirin, 250 mg/day. ⋯ Because aspirin is widely used, its role in causing spinal epidural hematoma will remain conjectural. For the present patient, however, it was postulated that aspirin had a major impact on the extent of the epidural bleeding. There should be awareness of a possible link between aspirin and spinal epidural hematoma.